Good game! Took me a moment to fully get into it after reading the rules, but once I did it clicked. One small suggestion: it might help if the main objective was shown more boldly in the middle of the screen (instead of tucked off to the side). That’s a nitpick though. Another idea could be to add a hint system, or even a demo/auto-play mode just for the first level or two, to show new players how it works in action.